{
  "manageEntity": {
    "action": "Update",
    "entityId": "980941",
    "entityType": "User",
    "metadata": "{\"cid\":\"bagaaierapffx2cgk3htoh2wkb5tbuyv7hnywl35scxyinkxznicyoqp67o4q\",\"data\":{\"events\":{},\"playlist_library\":{\"contents\":[{\"type\":\"playlist\",\"playlist_id\":1683845443},{\"type\":\"playlist\",\"playlist_id\":4281},{\"type\":\"playlist\",\"playlist_id\":53481},{\"type\":\"playlist\",\"playlist_id\":142975}]}}}",
    "nonce": "0x51fde6632844f45597b0168f6d6f46f2127f9e0c6ddc22809c2f18598c0e2c94",
    "signature": "0xf00a89d480d528103db4a8c69a53572d145d066f1625e25b7eda052f83a7e4f60a16235afb6db30633296a889a018fb9f1493a9e3da0a6d8592082f814fc5fe81c",
    "signer": "0xad12A53B30a86D04715B5663c5832Df6E2Cb9710",
    "userId": "980941"
  }
}